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- 4180 025 2010 STIHL Valve – Genuine OEM Part
Description
4180 025 2010 STIHL Valve – Genuine OEM Part
The STIHL Valve (4180 025 2010) is a genuine OEM replacement engine valve designed for use on select STIHL 4-MIX® engines.
This valve is installed within the engine cylinder head and plays a critical role in controlling the intake or exhaust flow during engine operation. Proper valve operation is essential for correct combustion, engine performance, and long service life.
Manufactured to STIHL factory specifications, this valve provides the correct dimensions, material strength, and heat resistance required for reliable engine operation.
Replacing a worn, bent, or damaged valve helps restore compression, improve performance, and prevent further engine damage.
Manufactured to STIHL OEM standards, this valve ensures proper fitment and long service life.
Product Details
OEM Part Number: 4180 025 2010
Brand: STIHL (Genuine OEM)
Part Type: Engine Valve
Application: Engine cylinder head (model-specific)
Condition: New Genuine OEM Part
Function
This OEM valve is designed to:
Control intake or exhaust gas flow
Maintain proper engine compression
Support efficient combustion
Replace worn, bent, or damaged valves
Maintain consistent engine performance
⚠️ A damaged valve may cause hard starting, loss of power, or engine damage.
Verify Fitment (Recommended)
Before ordering, confirm:
OEM part number 4180 025 2010
Engine diameter matches your unit
Application matches your STIHL parts diagram
⚠️ Always verify fitment by OEM part number and engine specification, as valves vary by engine size.
Compatibility
Fits select STIHL models, including:
Engine Ø 38 mm
FC 91
FS 91
FS 91 R
FS 91.0
FC 96
KM 91 R
Engine Ø 40 mm
HT 102
HT 105
FS 111
FS 111 R
FS 111 RX
FC 111
KM 111 R
(Exact application varies by model and configuration — verify using OEM parts diagram.)
Installation Notes
Allow engine to cool completely
Disassemble cylinder head as required
Remove the existing valve carefully
Install STIHL OEM valve 4180 025 2010 correctly
Set valve clearance according to STIHL specifications
⚠️ Valve installation and adjustment should be performed by a qualified technician.
Maintenance Tips
Check valve clearance at recommended service intervals
Replace damaged valves promptly
Use only genuine STIHL OEM valves for correct fit and durability
